1. Department of Economics, PUC-Rio, Rua Marquês de São Vicente, 225 Sala 210F–Gávea 22451– Rio de Janeiro, Brazil (email: )
2. Department of Economics, University of Virginia, PO Box 40018, Charlottesville, VA 22904 (email: )
3. Department of Economics and Institute of Economic Research, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, South Korea (email: )